For about the past 5 months I have been suffering with dizziness and bouts of 'weakness' and heart palpitations (occassional rapid heartbeat). I was diagnosed with labyrinthitis but this did not explain the periodic faintess (feel like I'm starting to 'black out') and weakness in my limbs. In the last couple of months I have developed a sore throat and have become so weak that its hard for me to even stand for even a few minutes. My limbs feel shaky all the time and my GP says my blood pressure is low. However - I have had no diagnosis, no treatment or no advice for how to manage this. Do I have chronic fatigue and is this why I can't do ANYTHING??? (ie even wash the dishes). I'm not actually sleepy - just weak. Any advice welcome!!!